Valve mechanism



vNov. 22, 1927.

H. B. HALVORSEN VALVE MECHANISM Filed July 29, 1919 Patented Nov. 22, 1927.

UNITED 'STATES HALBERT 2B. HALvonSEN, or CHICAGO, innrivors,v Ayssrefivony To snLLrvAN` 1i/riic:n1;i\rA

EBY COMPANY, A conronn'rroiv or MASSACHUSETTS.

` VALVEMECHANISM.

Application led July 29, V1919. Serial No. 314,177.

My invention relates to valve mechanism.

It has for its object to. provide an improved and Simplified valve mechanism especially adapted to use in Connection with air or gas compressors. A further object of my invention is yto providea valve mechanism including an improved valve member of simple and rugged construction adapted to be manufactured at small expense and to cooperate with an improved ported valve seat in any improved manner whereby the mechanism is adapted eihciently to control the pressure fluid flow as desired without requiring attention on the part of the operator, all being eliminated through my improved construction. Thesc and other objects `and advantages ofl my improved construction will, however, hereinafter morefully appear.

For purposes of illustration, I have shown in the accompanying drawings several embodiments vwhich my invention may assume in practice, the same `being illustrated therein as applied to use in connection with a comressor.

In these drawings,- l

Fig. 1 is an end elevation of a compressor cylinder equipped with my improvemenhthe valve mechanism being shown in dotted lines therein. y

Fig. 2 is a side elevation of the same, partially in' section and showing the valve mechanism in transversesection. Fig. 3 is a detail sectional view'on line 3-3 of Fig. 2, showing the inlet or suction valve. K

Fig. 4 is a similar detail viewv showing a modiiiedform of seating means'. c

' In this illustrative construction Il have shown aV compressor cylinder 1 having a piston 2 operatively connected to a piston lrod 3 movable therein, thel air or gas to be compressed beingreceived through an intake 4 and delivered through improved valve mechanism, hereinafter describedto the cylinder, and, after compression by'the piston, delivered through improved cooperating valve mechanism to the discharge 5, it being understood that in a double acting cylinder similar valve mechanism is provided at the opposite ends of the latter. y u

In considering this form of my improved construction, I will first describe the inlet valve mechanism. It will be-observed that the cylinder head 6 is' provided with a chamdanger ofybrcakage of the valveVV ber 7 communicating with the intake, and

that this chamber is in turn provided with a valve inlet 8, herein, for example, in the form ofa slot extending transversely across.

the cylinder head and below the center line thereof. Cooperating with this inlet 8 and normally disposed thereover lin a valve chamber, hereinafter described,lis a valve member 9, herein of tubular form and preferably'made of light steel tubing ground on the outside surface and herein resting on-its side on a correspondingl shaped seat 10 formed in the cylinder cady on opposite sides of the inlet 8 and extending throughout the length thereof, the seat preferably being reamed exactly to the same'size as the periphery of the valve. Herein it' will also be observed that a valve outlet '11, herein similar to the inlet 8, 'is provided within the seat 10,-A herein above lthe inlet 8, and with the seat 10k forms part of the transverse housing chamber .12, which is f generally elliptical in cross section, the constructionbeing such that the kinlet 8 is inline with' the major axis of the ellipticaly chamber sothat the valve member mayas a Vresult be rolled to one side ofthe chamber bythe pressure acting through the valve inlet in such a manner as to uncover the valve inletlO without covering the outlet 11 and thereby permit the` free flow of air'from the intake yinto the cylinder, and when the pressure iow ceases, roll back into its normal closed position.

Cooperating with the intake valve mechanisin ust described, lis improved discharge valve mechanism. This mechanism, as shown, includes' a valve member 13 corresponding .to the valve member .9.and movable in an approximately elliptically.l bored chamber 14, corresponding to the. chamber 5 12, and relative to a seat. 15, similar to the 9 seat 10, to control the discharge ofthe compressed lfluid from the cylinder through a valve inlet 16 and from the valve chamber. through a valve discharge openin 17 the latter leading to the compressor discharge 5. l In a preferred form, this discharge valve as shown at 18 in Fig. 3. Here attention is also directed to the fact that provision is also made Whereby each of these valves is maintained in operative position endvvise With respect to its port or ports' and adapted to be readily removed- Whenever desired, such provision herein assuming the form ot' removable plugs 19 seated in and closing the ends of the chambers l2, 1.41 and removably attached to the cylinder headby means ot screws 20, the plugs tor the.- iin-letvalves prelera-bly beingy provided With concave @nds-21,@ shown, in order tol adapt them to receive the. convex ends 18 on the; :inlet val-ves;V

Vhile; the above mechanismis entirely automatic in its action, the, valves in respouse to:y the fluid ovf rolling. into open position and rolling; back inte their closed positionsndue to grafvityi,A and. such av construction' is Sufi'cient for useon compressors running at compara-tively slow, speeds;v l halve` also providedimproved cool mating or supplemental seating means :tiroiuse in connection Withg the valves, when the same are 1.15.6611 0.1i high Speed compressors. These means may, obviouslyassume various terms. Herein it will be noted that in Figs. l to 3,

inclusiv@ lhave, shown a: plurality oi re! si-ljienli means adapted to pertorni tliis-'lunction, and also, to position the-valves, thel same preferably being spaced apart 'long-nudinelly. of; the cylindrical; valvemcmbers in such; a manner as accurately to locate th. Same. in their chambers and 'in respect to their seats.A These means, shown, each include `a hollow plunger 22 l'iaving a closed concave end 23, adapted to engage the sur" tace, Voft the valve member and normally being," held, in engagement; therewith by means; ot a spring, hereiny in the lorm of a coiled: spring 2t having one. end acting against, the plunger and the other -actinlgg` against, a pluggQ threaded Vinto theouter end ofiabOmd out.en',t'ensionmQ/,ol formed on the cyl inder head1 and in which the plunger is guided by Inca-ns ot flanges 2 engaging; and slidable longitudinally of the bore therein. Herein. attention; is also directed to the Atact that. these cooperating seatingV means are preferably located, shown, diainetrically opposite the inlets 8 and 1G: through which the free or compressed fluid respectively acts upon; valvemembers 9 and 13, the con uctiesiV beingsuch as` thereby to balance che valves and= to; apply the seating pressurev most-1 elliectifvely thereto. ln lait willi also be observed that.v l have illus'- trated` a modified forml ot these seating means, the same herein: :resuming` the term ot bowed lea-l springs 28- in, suitable apertures. 2E)A above the valvev members and having their' ends 30 bent over into adjacency, as shown, in such a manner as to form a` substantially. elliptical spring which engages the valve member with its ends 30 at points closely adjacent anden opposite sides of a diameter extending through the inlet port.

Inthe operation of 'my improved construction, it will be observed that as the piston isreCiprOCated the inlet and discharge valves will operate alternately to admit atmospherie, pressure to the cylinder and to discharge the compressed fluid from the cylinder, the iii-lett Vand ldischarge, valves whenr subjected tov suction or pressure, rolling` ba'clr intheir elliptically bored. chambers to open the portV or ports in duestiom, and; .as soon as the suction or pressure is.` released, automatically resuming their seats.- either Clue to. the action of gravity as., described, when the same are used on. comp.'ressenshun` ningz at relatively slow speeds, or. through the action. of my improved seating;v

where a more rapidseating ot thelvalves is required, when the sa-meare used on. high speed compressors.

l/Vhile l have in `this application cally described several forms WhichQmy in.- vention mayV assume in practice, it will be understood that these forms ot the samey are shown for purposes of. illustration andftliat the inventionmay bemoditied andemliodied valve in said chamber cooperating with the second of said ports, said valvevvhen; unseated changing its positronl in. said.. chamber While leaving the volume of the latter in communication` -vvith` said cylinder unchanged. -K a j 2. In a valve mechanism, in combination, a curvedportedvalverseat, al hollov7 cylindrical' valve member `normally seated thereon. andr movable in` responsev to fluid pressure, andv cooperating means acting upon. thaopposite endsof said valve member for returning said valvemember to said seat.. f

3L In a valve mechanism, in. combination,

a` curved ported valve seat, a hollow cylindricall valve member normally seated; thereon and movable in. response. to fluid pressure, and resilient meansacting; uponthe-r opposite ends ofsaid-vallve member for returning said valve Y member to said seat.

fl. lny avvalve tor gaseous fluid. pumping mechanism, in combination, an ellipt'ically bored ported valveA chamber, a hollow cylindrical valve member normally disposedjover toV secure ilo port therein andmovable transversely of said chamber, and means for permitting the removal of said valve member through one end of said chamber, said means having a curved portion cooperating with the adjacent end of the valve to seat the same.

ing said valve member longitudinally in said chamber including a removable plug in one end of said chamber.

6. In a valve mechanism, a portedvalve chamber, a cylindrical valve member movable transversely of said chamber, and curved means for engaging the end of said valve during a transverse movement thereof.

7 In a valve mechanism, a ported valve casing providing a chamber, a cylindrical valve member movable transversely of said chamber, said casing and valve member including portions cooperating to guide the movements of the valve, one of said portions providing a recess and the other constituting a guiding portion projecting into the recess.

8. In a valve for gaseous fluid pumping mechanism, in combination, an elliptically bored ported valve chamber, a hollow cylindrical valve member normally'disposed over a port therein and movable transversely of said chamber, and means for locating said valve member longitudinally in said chamber including a plurality of removable plugs located in opposite ends of said chamber at least one of said plugs having a longitudinally extending surfaceto engage an end o said valve member.

9. In valve mechanism, in combination, a cylinder head having a plurality of transversely disposed ports therein and elliptically bored valve chambers communicatingwith said ports, and cylindrical hollow valvemenibers carried in said chambers normally disposed over said ports and movable transversely of said chambers in response to fluid pressure, one of said valve members having open ends and the other having closed ends.

l0. In a valve mechanism, in combination, a cylinder head having a plurality of transversely disposed ports therein and elliptically bored valve chambers communicating with said ports, cylindrical hollow valve members carried in said chambers normally disposed over said ports and movable transversely of said chambers in response to fluid pressure, one of' said valve members having open ends and the other closed ends, and automatic means for instantly seating said valve members upon cessation of fluid pressure. f

ll. In a valve mechanism, in combination,

a cylinder head having a plurality of transversely disposed ports therein and elliptically bored valve chambers communicating with said ports, cylindrical hollow valve members carried in said chambers normally disposed over said ports and movable transversely of said chambers in response to fluid pressure, one of said valve members having open ends and the other closed ends, and resilient seating means acting upon eachvof said valve members at a plurality of points between their ends.

l2. In a valve mechanism, in combination, cylinder, a cylinder head having transverse inlet and discharge slots therein adapted to communicate with said cylinder and elliptically bored transversely disposed valve chambers communicating with said slots,

rand hollow cylindrical valve members normally disposed over the slots in said'chambers and movableV transversely of said chambers in response to variations in fluid pressure in said cylinder.

13. In a valve mechanism, in combination, a cylinder, a lcylinder head having transverse inlet and discharge slots therein and communicating elliptically bored transversely disposed valve chambers and an inlet communicating with one of said chambers, and hollow cylindrical valve members normally disposed over the slots in said chambers and movable in opposite directions :transversely of said chambers in `response to variations in fluid pressure in said cylinder.

lll. In a valve mechanism, in combination, a curved ported valve sea-t, a hollow cylindrical valve member normally seated thereon and movable in response to fluid pressure, and` cooperating means for returning said valve member to said seat, said means being removable in anoutward direction from the periphery of said valve member.y

l5. In a valve mechanism, a ported valve chamber, a fluid actuated cylindrical valve adapted to cover saidport, and means for uncovering said `port by initially subjecting the periphery of saidV valve substantially tangentially to pressure fluid.

16. In a valve mechanism, a ported valve chamber, a cylindrical valve directly movable by pressure fluid adapted to cover said port by its periphery, and means whereby the initial movement' of said rvalve to uncover saidV port has a component of rotary motion.

17. In a valve mechanism, a housing having a valve chamber therein of substantially elliptical cross section and a fluid passage communicating with said chamber and y substantially tangential thereto, and a cylindrical valvev directly movable by pressure fluid flowing through said passage.

In testimony whereof I affix my signature.

HALBERT B. HALVORSEN. 

